Specifies the degree of translucency on a translucent form.
Set AlphaBlendValue to a value between 0 and 255 to indicate the degree of translucency when the AlphaBlend property is true. A value of 0 indicates a completely transparent window. A value of 255 indicates complete opacity.
Note: AlphaBlendValue only has an effect when the AlphaBlend property is true.